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Physical broadcast channel for coverage enhancement

a physical broadcast channel and coverage technology, applied in the field of physical broadcast channels, can solve problems such as packet loss or service disruption

Active Publication Date: 2016-05-12
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent describes a system for improving the coverage of a physical broadcast channel (PBCH) in wireless communication. The system uses a base station to determine the configuration of a cell and selects the appropriate PBCH configuration based on that configuration. The PBCH configuration can include the number of repetitions and the resources used for the transmission. By doing this, the system can ensure that the PBCH is transmitted with the appropriate level of coverage enhancement. The technical effect of this system is improved coverage of the PBCH and improved reliability of the wireless communication network.

Problems solved by technology

Transmitting system information to these devices using the same repetition level used for other UEs may result in lost packets or service disruption.

Method used

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  • Physical broadcast channel for coverage enhancement
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  • Physical broadcast channel for coverage enhancement

Examples

Experimental program
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Embodiment Construction

[0053]Some wireless systems may provide for automated communication known as Machine-to-Machine (M2M) communication or Machine Type Communication (MTC). M2M or MTC may refer to technologies or devices, such as user equipment (UEs) that communicate without human intervention. In some cases, MTC devices may have limited capabilities. For example, while some MTC devices may have broadband capacity, other MTC devices may be limited to narrowband communications. This narrowband limitation may, for example, interfere with the ability of an MTC device to receive control channel information using the full bandwidth served by a base station. In some wireless communication systems, such as systems configured according to the Long Term Evolution (LTE) communications standard, an MTC device having limited bandwidth capability (or another device with similar capabilities) may be referred to as a category 0 device.

[0054]In some cases, MTC devices may have reduced peak data rates (e.g., a maximum ...

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PUM

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Abstract

Methods, systems, and devices for wireless communication are described. A base station may select a repetition level for a physical broadcast channel (PBCH) based on system configuration parameters. A user equipment (UE) may identify the system configuration. For example, the UE may assume a system bandwidth, assume a control region size, and determine whether the cell is a time division duplexing (TDD) or frequency division duplexing (FDD) cell. The UE may then determine a PBCH configuration based on the system configuration. For example, the PBCH repetition level may depend on the system configuration, such as whether a TDD or FDD scheme is employed. The UE may then receive a PBCH transmission according to the PBCH configuration. If a different cell has a different system configuration, the UE may determine a different PBCH configuration and receive PBCH using a different repetition level and different resources.

Description

CROSS REFERENCES[0001]The present Application for Patent claims priority to U.S. Provisional Patent Application No. 62 / 078,308 by Chen et al., entitled “PBCH For Coverage Enhancement,” filed Nov. 11, 2014, assigned to the assignee hereof and expressly incorporated by reference herein.BACKGROUND[0002]1. Field of Disclosure[0003]The following relates generally to wireless communication and more specifically to physical broadcast channel (PBCH) for coverage enhancement.[0004]2. Description of Related Art[0005]Wireless communications systems are widely deployed to provide various types of communication content such as voice, video, packet data, messaging, broadcast, and so on. These systems may be multiple-access systems capable of supporting communication with multiple users by sharing the available system resources (e.g., time, frequency, and power). Examples of such multiple-access systems include code division multiple access (CDMA) systems, time division multiple access (TDMA) syst...

Claims

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Application Information

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IPC IPC(8): H04W16/26H04W72/04
CPCH04W72/044H04W16/26H04L5/0053H04L5/0007H04L5/0069H04W76/40H04W72/00
Inventor CHEN, WANSHIXU, HAO
Owner QUALCOMM INC